fracture mechanics of spot welded steel sheets of

‫اﻟﺠﻤﻬﻮرﻳﺔ اﻟﺠﺰاﺋﺮﻳﺔ اﻟﺪﻳﻤﻘﺮاﻃﻴﺔ اﻟﺸﻌﺒﻴﺔ‬
REPUBLIQUE ALGERIENNE DEMOCRATIQUE ET POPULAIRE
‫وزارة اﻟﺘﻌﻠﻴﻢ اﻟﻌﺎﻟﻲ و اﻟﺒﺤﺚ اﻟﻌﻠﻤﻲ‬
MINISTERE DE L’ENSEIGNEMENT SUPERIEUR ET DE LA RECHERCHE SCIENTIFIQUE
Université Hadj Lakhdar
Batna
Centre de Recherche Scientifique et Technique en Soudage et Contrôle.
CSC, BP 64 Chéraga, Alger. Tél. /Fax 021 37 18 21
Université Saad Dahlab
Blida
FRACTURE MECHANICS OF SPOT WELDED STEEL SHEETS OF EQUAL
THICKNESS IN COACH-PEEL SPECIMENS
Mecirdi Mohamed El Amin a,*, Bouafia Farida a
a
Laboratory of Mechanics, Department of mechanics, University Djillali Liabes of Sidi Bel
Abbes BP89, City Ben M’hidi, Sidi Bel Abbes, (22000), Algeria.
E-mail: [email protected]
Abstract :
In the current paper, a numerical investigation based on finite element method has been
constructed to analyze fracture mechanics of two L-shaped sheets welded with resistance
welding. The fracture behaviour of the welded structure is considered with the assumption of
a crack at the interface of welded sheets. The study has been treated as a linear elastic fracture
mechanics problem in mixed mode, under plane stresses conditions. Computations was
performed, using commercial FE software package ABAQUS. Modelling results highlight the
dependence of the stresses intensity factors on key design parameters of spot welds such as
nugget diameter, bent curvatures, sheet thickness, materials properties, and the applied load.
Keywords : Finite element method; spot weld, Fracture mechanics; stresses intensity factor,
mixed mode
Conférence Internationale sur le Soudage, le CND et l’Industrie des Métaux, IC-WNDT-MI’10
Oran, 28 - 30 novembre 2010. Site web : http://www.csc.dz/wcndt-10